Rezumat problemă

Inventie

#1214

Lui Mihai îi place matematica distractivă, sau poate mai mult distracția decât matematica. Pentru a scăpa de teme, el a inventat operația ”smile” notată cu semnul ☺, operație care se aplică numerelor naturale nenule conform exemplelor de mai jos:

• 6☺4=210
• 9☺2=711
• 8☺5=313
• 7☺6=113
• 6☺6=12
• 6☺10=416
• 43☺1500=14571543
• 23☺23=46

Profesorul de matematică i-a promis nota 10 pentru invenție, numai dacă știe să determine corect numărul divizorilor pari pentru rezultatul obținut prin operația ”smile”. Astfel, Mihai a primit N perechi de numere (a,b) pentru care trebuie să calculeze a☺b și să determine dacă rezultatul obținut are divizori pari.

Scrieți un program care citește un număr natural N și N perechi de numere naturale (a,b) și afișează:

a) pentru fiecare pereche de numere (a,b), rezultatul a☺b;
b) cel mai mic și cel mai mare rezultat a☺b care nu are divizori pari.

ONI GIM 2015, Clasa a V-a

Fișiere Candale Silviu (silviu) Ana Maria Arisanu concurs

Clasa 9 Algoritmi elementari Cifrele unui număr

Rezolvă

Detalii

Problema	Inventie	Operații I/O	inventie.in/inventie.out
Limita timp	0.3 secunde	Limita memorie	Total: 2 MB / Stivă 2 MB
Id soluție	#64214236	Utilizator	Besmeciuc Antonia (Antonia_Besmeciuc)
Fișier	inventie.cpp	Dimensiune	1.42 KB
Data încărcării	23 Aprilie 2026, 11:06	Scor/rezultat	Eroare de compilare

Evaluare

Mesaj compilare

inventie.cpp:2:17: error: ‘td’ is not a namespace-name
    2 | using namespace td;
      |                 ^~
inventie.cpp:3:1: error: ‘ifstream’ does not name a type
    3 | ifstream cin("inventie.in");
      | ^~~~~~~~
inventie.cpp:4:1: error: ‘ofstream’ does not name a type
    4 | ofstream cout("inventie.out");
      | ^~~~~~~~
inventie.cpp: In function ‘int main()’:
inventie.cpp:9:5: error: ‘cin’ was not declared in this scope; did you mean ‘std::cin’?
    9 |     cin>>n;
      |     ^~~
      |     std::cin
In file included from inventie.cpp:1:
/usr/include/c++/13/iostream:62:18: note: ‘std::cin’ declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
inventie.cpp:14:13: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
   14 |             cout<<a-b<<a+b<<endl,x=a-b;
      |             ^~~~
      |             std::cout
/usr/include/c++/13/iostream:63:18: note: ‘std::cout’ declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
inventie.cpp:14:29: error: ‘endl’ was not declared in this scope; did you mean ‘std::endl’?
   14 |             cout<<a-b<<a+b<<endl,x=a-b;
      |                             ^~~~
      |                             std::endl
In file included from /usr/include/c++/13/iostream:41:
/usr/include/c++/13/ostream:735:5: note: ‘std::endl’ declared here
  735 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
inventie.cpp:15:14: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
   15 |         else cout<<b-a<<a+b<<endly=b-a;
      |              ^~~~
      |              std::cout
/usr/include/c++/13/iostream:63:18: note: ‘std::cout’ declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
inventie.cpp:15:30: error: ‘endly’ was not declared in this scope
   15 |         else cout<<b-a<<a+b<<endly=b-a;
      |                              ^~~~~
inventie.cpp:16:9: error: ‘else’ without a previous ‘if’
   16 |         else cout<<<a+b<<endl;
      |         ^~~~
inventie.cpp:16:14: error: ‘cout’ was not declared in this scope; did you mean ‘std::cout’?
   16 |         else cout<<<a+b<<endl;
      |              ^~~~
      |              std::cout
/usr/include/c++/13/iostream:63:18: note: ‘std::cout’ declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
inventie.cpp:16:20: error: expected primary-expression before ‘<’ token
   16 |         else cout<<<a+b<<endl;
      |                    ^
inventie.cpp:16:26: error: ‘endl’ was not declared in this scope; did you mean ‘std::endl’?
   16 |         else cout<<<a+b<<endl;
      |                          ^~~~
      |                          std::endl
/usr/include/c++/13/ostream:735:5: note: ‘std::endl’ declared here
  735 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
inventie.cpp:20:13: error: ‘m’ was not declared in this scope; did you mean ‘mn’?
   20 |             m=0;
      |             ^
      |             mn
inventie.cpp:21:26: error: ‘v’ was not declared in this scope
   21 |             while(y) m++,v[m]=y%10,y=y/10;
      |                          ^
inventie.cpp:22:26: error: ‘v’ was not declared in this scope
   22 |             while(x) m++,v[m]=x%10,x=x/10;
      |                          ^
inventie.cpp:23:18: error: ‘mnx’ was not declared in this scope; did you mean ‘nmx’?
   23 |             if(m>mnx)
      |                  ^~~
      |                  nmx
inventie.cpp:25:45: error: ‘v’ was not declared in this scope
   25 |                 for(int i=1;i<=m;i++) mx[i]=v[i];
      |                                             ^
inventie.cpp:32:24: error: ‘v’ was not declared in this scope
   32 |                     if(v[i]>mn[i])
      |                        ^
inventie.cpp:40:45: error: ‘v’ was not declared in this scope
   40 |                 for(int i=1;i<=m;i++) mn[i]=v[i];
      |                                             ^
inventie.cpp:39:13: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   39 |             if(m<nmn)
      |             ^~
inventie.cpp:41:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
   41 |                 nmn=m;
      |                 ^~~
inventie.cpp:43:21: error: ‘m’ was not declared in this scope; did you mean ‘mn’?
   43 |             else if(m==nmx)
      |                     ^
      |                     mn
inventie.cpp:47:24: error: ‘v’ was not declared in this scope
   47 |                     if(v[i]>mn[i])
      |                        ^
inventie.cpp:52:25: warning: init-statement in selection statements only available with ‘-std=c++17’ or ‘-std=gnu++17’ [-Wc++17-extensions]
   52 |                 else if(v[i]>mn[i] break;
      |                         ^
inventie.cpp:53:12: error: expected primary-expression before ‘}’ token
   53 |            }
      |            ^
inventie.cpp:52:42: error: expected ‘)’ before ‘}’ token
   52 |                 else if(v[i]>mn[i] break;
      |                        ~                 ^
      |                                          )
   53 |            }
      |            ~                              
inventie.cpp:53:12: error: expected primary-expression before ‘}’ token
   53 |            }
      |            ^

Cum funcționează evaluarea?